Purity is 99.99% The 99.99% alumina powder (4 N) produces has as three different phase states α,θ and γ. The primary particle average size is 40 nm and the particle size distribution (D50) can be adjusted between 1-40 µm depending on clients's demands. Application for : Tricolor Phosphor, Long Afterglow Phosphor, YAG Phosphor, Synthetic Stone Luminous powder
